Noun. 1. drainage basin-the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet; flood control in the Missouri basin. catchment area, catchment basin, drainage area, river basin, watershed, basin.
Milkman syndrome. a generalized bone disease marked by multiple transparent stripes of absorption in the long and flat bones. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition.
Oxytocin causes the cells around the milk ducts to contract and eject milk from the milk glands and down the milk ducts. This passing of the milk down the ducts is called the âlet-downâ (milk ejection) reflex. Let-down is experienced in numerous ways including: your infant begins to actively suck and swallow;